it wont really matter what line u use as long as the reel can handle it i got a big bell type w/50lb test its cajuane redline my other is a baitcastor it has 30lb big game what i look for is the smallest dia.i can find cause u can cast it alot better u try to find cats around log jams deep holes and u fish these places up stream from them cause cats will go up stream to find bait hte bigger cats tend to feed more at night or early morning nite u find cats around shallow areas feeding day time your log jams and deep holes are more affective